55 lines
2.7 KiB
Markdown
55 lines
2.7 KiB
Markdown
---
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layout: page
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title: DEC PDP-11 Paper Tape Images
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permalink: /apps/pdp11/tapes/
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---
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DEC PDP-11 Paper Tape Images
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----------------------------
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To load any of the DEC PDP-11 paper tapes listed below, you will need to use a [PDPjs Machine](/devices/pdp11/machine/)
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with a [PC11 High-Speed Paper Tape Reader/Punch](/devices/pdp11/pc11/), such as this
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[PDP-11/20](/devices/pdp11/machine/1120/basic/debugger), and then perform the following steps:
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- **Read** the [DEC PDP-11 Bootstrap Loader](/apps/pdp11/boot/bootstrap/)
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- **Load** the [Absolute Loader](absloader/) tape image
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- **Run** the Bootstrap Loader to read the Absolute Loader
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- **Load** one of the "Absolute Format" tape images below
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- **Run** the Absolute Loader to read the selected tape image
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This mirrors the "real world" process of loading paper tape software. However, PDPjs offers a faster method:
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any "Absolute Format" tape (which should include all the tapes listed below) can *also* be loaded directly into RAM
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using the machine's **Read** button, replacing all those steps with a single click.
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Paper Tape Diagnostics
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----------------------
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We have archived an assortment of [DEC Paper Tape Diagnostics](diags/).
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Paper Tape Software (circa 1970)
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--------------------------------
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As documented in the [PDP-11/20 Handbook (1971)](http://archive.pcjs.org/pubs/dec/pdp11/1120/PDP1120_Handbook_1971.pdf),
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p. 155, "PAPER TAPE SOFTWARE", the following software was available on paper tape:
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- [PAL-11A ASSEMBLER](pal11a/)
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- PAL-11S ASSEMBLER (Program Assembly Language for the PDP-11, Relocatable Version)
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- [ED-11](ed11/) (Text Editor program)
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- [DUMPTT](dumptt/) (Dump Octal)
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- [DUMPAB](dumpab/) (Dump Absolute Binary Code)
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- [FPP-11](fpp11/) (Floating-Point and Math Package for the PDP-11)
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- [ODT-11](odt11/) (On-line Debugging Technique for the PDP-11)
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- [IOX](iox/) (PDP-11 Input/Output eXecutive)
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- [PDP-11 BASIC](basic/) (Beginners All-purpose Symbolic Instruction Code)
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There was a separate DEC publication, [PDP-11 Paper Tape Software Handbook](http://archive.pcjs.org/pubs/dec/pdp11/pc11/Paper_Tape_Software_Handbook.pdf),
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that described all of the above software in greater detail, and it included some programs that the 1971 Handbook listed under
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"Disk Operating System" instead of "Paper Tape System", such as:
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- LINK-11S LINKER
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Thanks to the [iamvirtual.ca](http://iamvirtual.ca/PDP-11/PTS-11/PTS-11.htm) website, most of the above programs are
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available as paper tape image files and are included in our "Default" [PC11 High-Speed Paper Tape Reader/Punch](/devices/pdp11/pc11/)
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configuration.
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Some additional information on DEC's Paper Tape Software is available at [retrotechnology.com](http://retrotechnology.com/pdp11/11_20_PTS.html).
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